Quick rear brake conversion question

[Georges]

I just got most of the parts from Blunt to convert to disk brakes in the rear (they are back in stock). My question is about machining the rear hubs. Will the machinist be able to turn down the hubs with the studs in place? If not, should I remove the old studs and later replace them with new ones? Thanks! 😀 

[tzei]

Dunno about turning but...

 

You can reuse old studs. But now is good opportunity change for longer ones as some rims want longer like E30 BBS basket weaves. That is if you want more rim options later on.

[TobyB]

I too would replace the rear studs- the old ones don't owe you anything!

 

And if they've been overtorqued they may be compromised.

 

Finding quality studs is NOT trivial, though- anything in the aftermarket right

now is a COMPLETE crapshoot, whereas the original German studs were quite good.

 

To directly answer the question, you'd probably have to ask your machinist.

If they do it on a mill with a rotary table, maybe, but on a lathe, maybe not.

It just depends on how they set the job up.  There's no truly easy way to cut them down,

as there isn't a convenient concentric surface to grab onto.

 

I've done it on a car with an angle grinder, and that took a while.  But it was

quicker and easier than disassembly!

 

t

 

[Georges]

Thanks guys

[Georges]

I'm having trouble finding a machine shop to turn the hubs. Is there any reason I can't just do it myself on the grinding wheel? My understanding is that the rotor just has to clear the hub; not that there is some kind of integral fit. Is that correct?

 

Thanks